Above are the front, back, and top view of the recovered camera from the  Thor II launch, recovered nearly two years after launch.  This camera differs from that used on the Thor I launch in a number of ways, namely: the film type used was Advantix on ThorII, versus standard 35mm on ThorI. The most significant difference was simply the timing circuit. ThorI used a relatively simply 555 timer circuit, whereas ThorII had a loop running on a microprocessor. Clearly, the 555 method produced good results, as shown on the ThorI page, whereas only 4 relatively poor photographs were recovered from the ThorII camera.